No description available.

No description available.

This is an American Indian ethnographic study for the Hoover Dam Bypass Project. The study sites included three bypass bridge alternatives, each located within one mile from where United States Highway 93 (U.S. 93), at the time of the study, crossed over the top of Hoover Dam at the Arizona-Nevada state line. Due to growth in population and commerce in the Southwest, the roadway at Hoover Dam has experienced a tremendous increase in traffic over the past 30 years, resulting in increased safety hazards to motorists, pedestrians, and the dam itself. Federal, state, and local governments have worked to find a solution to the impacts of increased traffic across Hoover Dam. This project was a continuation of EIS efforts that began in 1989. The goal of this project was to evaluate alternative crossings of the Colorado River near Hoover Dam. The goal of this study was to evaluate the potential impacts to American Indian cultural resources related to the three proposed crossing alternatives. This report is an expanded version of the draft produced in 1998. In 2000, funding became available to carry out further ethnographic research and involve Mohave, Hualapai, and Southern Paiute people.

As part of the American Indian consultation process for the Hoover Dam Bypass Project the Federal Highway Administration (FHWA) consults regularly with representatives of tribal groups that have an interest in cultural and traditional resources affected by the project plans and activities. The focus of this document is on information particular to understanding cultural landscapes and the long standing connections between the Southern Paiutes, Hualapais, and Mohaves and the revered sites of Sugarloaf Mountain and Goldstrike. In the end, these layered intertribal and geographic connections which link these sites met the criteria for establishing the eligibility of Sugarloaf Mountain and Gold Strike Canyon as Traditional Cultural Properties (TCPs). This report was prepared as part of the nomination process. Maps containing locations have been redacted from the public document. Tribal members who want a copy of the un-redacted report please contact Special Collections. Sugarloaf Mountain and Goldstrike Canyon officially were designated TCPs on September 4, 2004.

Class of 2012 Abstract / Specific Aims: Determine the difference in venom potency among Mohave Rattlesnakes in Cochise in Pima Counties and determine if those differences correlate to changes in clinical outcomes. Methods: Twenty-one Mohave rattlesnakes, C. s. scutulatus were collected from Arizona and New Mexico. Venom proteomes were analyzed using RP-HPLC and SDS-PAGE. The toxicity of venoms was analyzed using LD50. Health severity outcomes between two Arizona counties, Pima and Cochise, were determined by retrospective chart review of the Arizona Poison and Drug Information Center database between 2002-2009. Main Results: Six phenotypes were identified based on three venom proteins; Mojave toxin, SVMP PI and PIII, and myotoxin. Venom changed geographically from SVMP-rich to Mojave toxin-rich phenotypes from south central to southeastern Arizona. Phenotypes containing myotoxins were only found in the transitional zone between the SVMP and Mojave toxin phenotypes. Venom samples containing the largest amounts of SVMP or Mojave toxin had highest and lowest LD50s, respectively. Conclusions: There was a significant difference when comparing the presence of CNS affects between Pima and Cochise counties (p = 0.001). No significant difference was found when comparing severity number of antivenom vials administered, days spent in a health care facility or envenomation per 100,000 population. Although not part of the original data to be collected, death and intubations, were also noted. There is a 10x and 50x increased risk of death or intubations if envenomated in Cochise County.

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No description available.

Thesis (M.A., Anthropology)--University of Arizona, 1954. / Includes bibliographical references (leaves 71-74).

Without an adequate understanding of complex interactions between native and non-native species, management of invasive species can result in unforeseen detrimental impacts. I used both field and laboratory experiments to study reciprocal species interactions between the endangered Mohave tui chub (Siphateles bicolor mohavensis) and invasive western mosquitofish (Gambusia affinis). I also examined the impacts of both fish species on the aquatic invertebrate communities in desert springs. I demonstrate a case of intraguild predation (IGP) as a mechanism facilitating co-persistence of the endangered Mohave tui chub with invasive mosquitofish using field mesocosm experiments. In this case of IGP, adult tui chub prey on adult and juvenile mosquitofish, while adult mosquitofish prey on tui chub eggs and/or larvae. I conducted laboratory predation trials to assess if IGP was size-structured due to predator gape-limitation. I explored sex specific differences in gape-size limitation in mosquitofish, because mosquitofish are sexually dimorphic. Larval tui chubs had lower survival in the presence of female mosquitofish than in the presence of males. Reciprocally, male mosquitofish had lower survival than the females in the presence of Mohave tui chub. These results combined with vulnerability modeling supported that IGP in this system is size structured based on gape-size limitation. These results collectively suggest size-structured IGP may facilitate the co-persistence of these two fish species. My findings also suggest that mosquitofish may not be a limiting factor for the persistence of the endangered Mohave tui chub. Further, habitats currently harboring mosquitofish were considered as future refuge habitats for Mohave tui chub, a management option previously un-available. In addition to such reciprocal interactions between fish species, recently established fish populations may impact unique invertebrate communities. Mesocosm experiments with sympatric and allopatric populations of tui chub and mosquitofish showed negative impacts of both fish species on changes of invertebrate community structure. Specifically, fish caused population declines and, in some cases, extirpations of various invertebrate taxa. These results suggest important conservation implications of invasive fish as well as protected fish transplants into fishless desert springs. Overall my research emphasizes the complexity of ecological interactions between native and non-native fish species in desert aquatic systems.

No description available.